Appliance cleaning
This function makes it easy for the shop’s staff to carry out a
cleaning of the appliance according to a standard procedure.
Appliance cleaning is activated via a signal – as a rule via a key
switch placed on the appliance.
Appliance cleaning is carried out via three phases:
1 - at the first activation the refrigeration is stopped, but the fans
keep on operating in order to defrost the evaporators. ”Fan” is
shown on the display.
2 - at the second activation the fans are also stopped and the
appliance can now be cleaned. ”OFF” is shown on the display.
3 - At the third activation refrigeration is recommenced. The
display will show the actual appliance temperature (o97
setting).
Documentation
When appliance cleaning is activated a cleaning alarm is trans-
mitted to the normal alarm recipient. A later processing of these
alarms will document that the appliance has been cleaned as
often as planned.
Alarm monitoring
There are no temperature alarms during appliance cleaning.
Defrost
Depending on the application you may choose between the fol-
lowing defrost methods:
Natural:
Here the fans are kept operating during the defrost
Electric:
The heating element is activated
Defrost sequence
1) Defrost
2) Waiting position after defrost
3) Drip off
4) Delay of fan
Start of defrost
A defrost can be started in different ways
Interval: Defrost is started at fixed time intervals, say, every
eighth hour. An interval must ALWAYS be set to
a "higher" value than the period set between two
defrostings when a schedule or network signal is used.
Refrigeration time: Defrost is started at fixed refrigeration time
intervals, in other words, a low need for refrigeration will
”postpone” the defrost
Schedule: Here defrost can be started at fixed times of the
day and night. However, max. 6 times
Contact: Defrost is started with a contact signal on a digital input
Network: The signal for defrost is received from a system unit
via the data communication
Manual: An extra defrost can be activated from the controller’s
lower-most button
All the mentioned methods can be used at random – if any of
them is activated a defrost will be started.
Stop of defrost
Defrosting can be stopped by either:
• Time
• Temperature (with time as safety).
-
+
+
°C
1
÷
+
Fan
2
÷
÷
Off
3
+
+
°C
User Guide | Controller for SemiPlugin appliance, AK-CC 460
© Danfoss | DCS (vt) | 2019.12
BC230086440483en-000201 | 5